US8882242B2 - System for printing on an object - Google Patents
System for printing on an object Download PDFInfo
- Publication number
- US8882242B2 US8882242B2 US13/853,212 US201313853212A US8882242B2 US 8882242 B2 US8882242 B2 US 8882242B2 US 201313853212 A US201313853212 A US 201313853212A US 8882242 B2 US8882242 B2 US 8882242B2
- Authority
- US
- United States
- Prior art keywords
- movement
- print head
- printing
- inkjet print
- nozzles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007639 printing Methods 0.000 title claims abstract description 100
- 230000001447 compensatory effect Effects 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 2
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 239000000976 ink Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 8
- 238000012937 correction Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 239000007921 spray Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0447—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles
- B05B13/0452—Installation or apparatus for applying liquid or other fluent material to conveyed separate articles the conveyed articles being vehicle bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
Definitions
- the present invention relates to a system for printing on an object, in which an image is printed on at least one non-planar region of a surface of the object.
- Adjacent printing paths need to be joined in such a way as to avoid optically visible disruptions at the edges of the printing paths. For example, if there is too much space between a first printing path and a second printing path, the result may be a visible streak between the two printing paths that affects the printed image. Another risk is that there may be too much overlap between the two printing paths. That may likewise result in a visible streak between the two printing paths that may have a negative effect on the printed image. Such defects in the printed image may be the result of insufficient accuracy of the mechanical components for guiding the print head. They may also result from centrifugal forces that act on the print head during its movement, causing the droplets to be mispositioned on the surface.
- German Patent Application DE 102 02 553 A1 corresponding to U.S. Pat. No. 7,981,462, for example, discloses moving an application device including spray nozzles in a manual, semi-automated or fully automated way along the surface of an object, for example a building or a public/civil engineering site, and thus applying any desired image to the surface.
- the first step is to detect and digitize the surface of the object. Then the image to be printed is virtually superimposed on the digitized surface.
- the application device prints on the surface the position of the application device needs to be accurately known.
- a number of measuring processes are suggested, for example measurements in the field of distance and/or angle measurement technology, telemetry and imaging measurement technology.
- the positioning error of the measured position value is used in a range check routine. No ink is discharged when the positioning error exceeds an acceptance threshold.
- German Translation DE 690 05 185 T2 of European Patent EP 0 396 855 B1 corresponding to U.S. Pat. No. 5,132,702, and U.S. Patent Application Publication No. 2004/0036725 A1 disclose two methods for influencing the drop speed and the drop size of the ink droplets coming from inkjet print heads by the type of pulse applied to piezoelectric actuators of the print head.
- the variables are, for example, pulse length, pulse amplitude (voltage) and pulse shape.
- the specification of that U.S. application describes how a preliminary pulse may specifically influence the volume and discharge direction of an ink droplet that is subsequently released by the actual pulse. In that way, it becomes possible to discharge individual ink droplets from the nozzle opening at an angle and thus to apply them to a different location on the surface of the object to be printed, than without such a preliminary pulse.
- German Patent Application DE 31 40 486 A1 corresponding to UK Patent Application GB 2,107,614, discloses a device for coating objects such as glass bottles with a synthetic material.
- the device includes a nozzle head having multiple nozzles distributed thereon to discharge a synthetic material in the form of successive droplets.
- driving devices or drivers are provided to bring about a relative movement between the object surface to be coated and the nozzle head.
- the nozzles are disposed in such a way as to ensure that the tracks of synthetic material emerging from adjacent nozzles overlap on the object.
- such an overlap may cause visible defects in the printed image because too much ink is applied, thus having a detrimental effect on the desired printed image.
- German Patent Application DE 37 37 455 A1 corresponding to U.S. Pat. No. 4,844,947, discloses a device and a method for creating ink patterns, for example stripes, on vehicle bodies.
- the application of ink may be achieved by using a print head disposed on a robot that guides the print head along the surface of the object to be printed.
- the print head has multiple spray nozzles.
- the width of the stripe to be printed may be changed by varying the number and distribution of the currently active spray nozzles.
- the position of a stripe in a direction perpendicular to the movement of the print head may be changed by moving the entire print head by using the robot.
- Another way of changing the position of the stripe is to activate varying numbers of spray nozzles. In that way, a fine-adjustment of the position of the stripe may be achieved, which is then superimposed to the control by the robot, representing an improved way of applying stripes.
- a system for printing an image onto at least one non-planar surface area of an object comprises an inkjet print head having nozzles, a robot creating a primary movement, the primary movement including at least two printing paths of the inkjet print head being lateral to each other, and a device creating a secondary movement, the secondary movement being substantially perpendicular to the primary movement and causing the printing paths to laterally adjoin each other.
- the device for creating secondary movements in the system of the invention it is advantageously possible to compensate positional deviations of the inkjet print head, i.e. deviations of the actual position from the nominal position required to print an image without defects, during the primary movement. This may eliminate or sufficiently reduce undesired visible streaks between the printing paths.
- laterally adjoining in this context means that the edges of the individual printing paths are located precisely adjacent each other without too great a gap between the edges and without too much overlap, thus sufficiently reducing or eliminating any streaks that are too pale or too dark in the region of the edges of the printing paths.
- the primary movement generated by the robot is preferably a movement of the inkjet print head, which passes through multiple printing paths that are located laterally to each other in the same direction or in an opposing direction.
- a first printing path may be printed during a forward movement of the print head across the surface of the object and a second, adjoining printing path may be created in a backward movement next to the first printing path.
- a provision may be made for the print head to be inactive during its backward movement and to be moved forward in a direction parallel to the first printing path.
- the robot may be an articulated robot or a gantry robot.
- the piezoelectric actuator acts on the inkjet print head as a whole and causes the latter to carry out the secondary movement as a compensatory movement in a direction perpendicular to the primary movement.
- the device may include a piezoelectric actuator and the secondary movement may be a movement of at least one nozzle of the inkjet print head.
- the secondary movement may be a movement of at least one nozzle of the inkjet print head.
- it is not the print head as a whole but only at least one nozzle that is moved in a direction perpendicular to the primary movement.
- the at least one nozzle, a nozzle group or all nozzles may be movably received on the inkjet print head so that the secondary movement caused by the piezoelectric actuator is a relative movement with respect to the inkjet print head.
- the secondary movement may be neither a movement of the print head as a whole nor of individual nozzles of the print head, but that in accordance with a preferred refinement of the system of the invention, the device includes a piezoelectric actuator and the secondary movement is a movement of at least the drops of one nozzle of the inkjet print head.
- the piezoelectric actuator is not the piezoelectric actuator that generates the drop but a different piezoelectric actuator that is separate therefrom.
- the device includes a detector detecting the actual position of print dots of a first printing path, the device includes a computer that calculates a deviation between the actual positions of the print dots and their nominal positions and, as the secondary movement, the device generates a compensatory movement on the second printing path that substantially compensates the deviation.
- the compensatory secondary movement (compensating potential undesired streaks) occurs on the basis of a nominal-actual comparison of print dots that have already been printed.
- the device may include at least one detector
- the robot may be an articulated robot
- the detector may include a rotary encoder detecting the angular position of a joint of the articulated robot. If the articulated robot includes multiple joints, preferably a detector is provided on each joint so that the spatial position of the robot and, in particular, of the print head received on the robot may be accurately determined as an actual position. If this actual position deviates from a predetermined nominal position, a corrective movement of the robot may be effected. The corrective movement acts as a compensatory secondary movement (compensating potential undesired streaks).
- acceleration sensors, inclination sensors, gyrometers may be used to detect the spatial coordinates of the print head, if desired in chronological sequence.
- the detector may include an optical sensor or an ultrasound sensor directed towards the surface of the object.
- the sensor may detect image dots that have previously been printed onto the surface and, based thereon, may determine an edge of the printing path that has previously been printed.
- the inks that are supplied to nozzles close to the edges are inks that are easy to detect by the detector.
- special additives may be used in the printing ink, for example additives that have a fluorescent characteristic and the fluorescent light of which may be detected by the detector with high precision.
- the optical sensor may be directed towards print dots on the surface that have already been printed and to detect the fluorescent radiation thereof. In this way it becomes possible to accurately detect the edge of a previously printed printing path and to accurately align the edge of a printing path yet to be printed with the detected edge so as to avoid or reduce undesired streaks.
- a so-called tracking system may be used to determine the position of the inkjet print head. This means that information on the current actual spatial position of the print head is continuously available and spatial corrective movements in the form of secondary movements (compensating potential undesired streaks) may be continuously implemented.
- the tracking system tracks a specific point of the print head or a mark thereon and determines its spatial path.
- three laser pointers having beams that are preferably at right angles to each other) which generate light dots on the surrounding walls or on detection screens provided for that purpose may be provided on the print head. The movements of these light dots may be detected by a camera and may be used to calculate the current position of the print head.
- the device may include a detector that detects the actual positions of print dots of a first printing path, a computer that calculates the deviation of the actual positions of the print dots from the nominal positions thereof and, as a secondary movement, the device may generate a lateral displacement of the image to be printed relative to the nozzles that substantially compensates the deviation.
- the print dot is offset by one or more printing nozzles on the surface of the object without having to move the print head or the nozzle themselves. Since the process does not require the movement of any mass, such compensatory movements can be implemented very quickly and may even take place in real time, depending on the computing capacity of the required computer.
- FIG. 1 is a fragmentary, diagrammatic, side-elevational view of a preferred exemplary embodiment of a system according to the invention.
- FIGS. 2 to 8 are enlarged, fragmentary, sectional views of various preferred exemplary embodiments of a system of the invention.
- FIG. 1 there is seen a system 1 for printing on a three-dimensional object 2 having a non-planar surface 3 .
- the system includes a print head 4 (for example a Spectra Galaxy JA 256/80 AAA) received on an articulated robot 5 (for example a Kuka KR 60-3).
- the robot 5 has three joints 5 a , 5 b , 5 c through which the robot 5 moves the print head 4 along the surface 3 of the object 2 .
- An ink and data connection 6 connects the print head 4 to an ink supply and a computer 20 .
- the connection 6 includes ink supply lines and signal lines for individual nozzles 7 of the print head 4 .
- FIG. 1 further illustrates the print head 4 in a position 4 ′ printing a printing path A onto the surface 3 of the object 2 .
- the movement of the robot 5 and of the print head 4 is directed into or out of the plane of the drawing in a primary movement 17 .
- the figure further shows that in a position 4 ′′, the print head has previously printed a printing path B onto the surface 3 of the object 2 .
- the print head 4 is likewise moved into or out of the plane of the drawing.
- Respective edges of the two printing paths A and B adjoin each other at a location 8 on the surface 3 in such a way that there is no unprinted gap and no overlap between the two printing paths.
- the individual printing paths A and B may be printed in one pass (single pass printing) or in multiple passes (multi-pass printing).
- FIGS. 3 to 8 illustrate advantageous refinements of the system of the invention that eliminate or reduce precisely such defects.
- FIG. 2 is an enlarged view of such a defect.
- the figure shows the print head in its two positions 4 ′ and 4 ′′ and individual print dots 9 (or rather halftone dots of the printed image, for example in an AM or FM screen) of the printing paths A and B. It is discernible that a respective average distance D 1 between print dots in the printing path A and D 2 between print dots in the printing path B is approximately identical, whereas a distance D 3 between the two print dots 9 on respective edges of the printing paths A and B is greater than the distances D 1 and D 2 .
- a person looking at an object 2 that has been printed in this way would realize a pale streak that disturbs the image between the two printing paths A and B.
- the print dots are formed by dots that are discharged from nozzles 7 of the print head 4 and need to travel through a certain dropping distance, for example approximately 1 cm, from the nozzle to the surface 3 , the positions of the print dots 9 on the surface 3 are not accurately predictable. In this respect, the distances D 1 , D 2 and D 3 are only average values. It is possible to place the print dots of the printing paths A and B close to each other and thus to create a full tone area.
- a practical and preferred example is as follows:
- the drop size of the drops 9 (average diameter) on the surface 2 is approximately 100 micrometers.
- the distance between the centers of the drops 9 is likewise approximately 100 micrometers.
- the variation of the points of impact and the positional accuracy of the robot 5 are likewise approximately 100 micrometers.
- the generation of a secondary movement on this order of magnitude may reduce or prevent the formation of undesired streaks.
- FIG. 3 illustrates a system according to the invention including a print head 4 and a piezoelectric actuator 10 disposed between the print head 4 and a mounting 19 of the robot 5 .
- the piezoelectric actuator 10 causes the print head 4 to be movable relative to the robot 5 or rather to the mounting 19 .
- the piezoelectric actuator receives control signals through the connection 6 of the print head 4 . These control commands result in a compensatory movement as a secondary movement 16 (see FIG. 1 ) carried out by a device 18 .
- this compensatory movement causes an amount of offset 11 of the print head 4 , resulting in a displacement of the two print dots 9 on the edges of the respective printing path A and B relative to each other in such a way that the distance between them corresponds to the average distance between the print dots of the respective printing paths.
- the control signals for the piezoelectric actuator 10 are supplied by a computer that calculates the required amount of offset 11 based on the actual position of the print head 4 currently detected and the nominal position of the print head 4 and sends a corresponding control signal to the piezoelectric actuator.
- the actual position required for the calculation may be detected by a detector.
- rotary encoders 12 a , 12 b , 12 c may be provided to detect the respective angular positions of the joints 5 a , 5 b , 5 c , which may then be used to establish the current actual position of the print head 4 .
- the vibrations of the piezoelectric actuator 10 cause the points of impact of the drops or the print dots 9 to vary. In the preferred example, these variations may preferably range between 10 and 100 micrometers.
- the vibrations may correspond to white noise.
- the vibrations may be periodical over time, yet in this case they need to be in a non-integer relationship with the cycle frequency at which the print dots 9 are created.
- the amplitude of the disturbance of the print head 4 caused by the piezoelectric actuator 10 corresponds to the amplitude of the variation of the point of impact of the drops if the secondary movement 16 is located in the plane of the print head 4 , for example on the bottom side thereof.
- FIG. 4 illustrates a further embodiment in which the piezoelectric actuator 10 is not disposed on the print head 4 but between a nozzle carrier 7 ′ for the individual inkjet nozzles 7 and a mounting 19 .
- the piezoelectric actuator 10 which is supplied with control commands by a computer, allows the compensatory movement as a relative movement of the nozzle carrier 7 ′ so that the print dots 9 on the edges of the respective printing paths A and B are at the desired distance for streak-free printing.
- the embodiment shown in FIG. 5 likewise includes a piezoelectric actuator 10 .
- the piezoelectric actuator 10 of FIG. 5 is disposed on a nozzle carrier 7 ′′ that only includes one nozzle 7 .
- the nozzle 7 prints a print dot 9 , which comes to rest on an edge of printing path A.
- Corresponding control signals for compensating the actual position relative to the nominal position of the print head 4 cause the piezoelectric actuator 10 to carry out a secondary movement 16 as a compensatory movement. Due to this secondary movement of the nozzle 7 , the print dot 9 created by this nozzle is placed at a distance from a print dot 9 of the adjacent printing path B, enabling streak-free printing between the two printing paths A and B.
- the embodiment shown in FIG. 6 likewise includes a piezoelectric actuator 10 .
- the piezoelectric actuator 10 shown in FIG. 6 is coupled to a nozzle 7 located on the edge of the print head 4 in such a way that when the piezoelectric actuator 10 is actuated as a result of a corresponding control signal, the print dot 9 to be printed by the nozzle is offset at an angle to correct the distance from an adjacent print dot 9 of the previously printed printing path B to ensure streak-free printing.
- FIG. 1 As shown in FIG.
- the separate piezoelectric actuator 10 is capable of influencing the trajectory of the ink drop that will form the ink dot 9 of the printing path A in such a way that the falling direction of the drop is not perpendicular to the bottom side of the print head 4 but at an angle ⁇ 90°. If this process is applied, however, care must be taken to ensure that the corrected print dot 9 actually reduces potential streaks rather than create new streaks within the printing path A. Under the given circumstances, this may be achieved by offsetting the printing dot 9 of the printing path A far enough to ensure that no streaks that are due to varying distances between the print dots are visible on the right side or on the left side (with reference to the drawing shown in FIG. 6 ) of the print dot 9 .
- the piezoelectric actuator may likewise be used to create statistical variations of the trajectories (and/or of the sizes) of successive ink drops to achieve a certain blurring on the edges of the printing path that reduces or eliminates undesired streaks.
- FIG. 7 illustrates a further preferred exemplary embodiment of the system of the invention in which a camera 13 is used.
- a print dot 9 ′ located on the edge of the previously printed printing path B was printed using a special ink.
- This ink may, for example, contain special additives that may be activated and have a fluorescent characteristic.
- a band pass filter 14 provided in front of the camera 13 , the fluorescent light of the print dot 9 ′ located on the edge may be detected.
- a non-illustrated computer connected to the camera 13 by a line 15 may calculate the position of the edge of the printing path B and may use the calculated position to calculate correction values for a secondary movement 16 of the print head 4 when the printing path A is printed. These correction values may be supplied to the device that initiates the secondary movement through the connection 6 shown in FIG. 1 .
- Such devices may be the embodiments shown in FIGS. 3 to 6 including respective piezoelectric actuators 10 .
- FIG. 8 A further preferred exemplary embodiment is shown in FIG. 8 .
- the illustrated print head 4 is guided with a certain amount of overlap with the previously printed printing path B.
- a print dot 9 a that would be printed by a nozzle 7 b if no correction was made is now printed by an adjacent nozzle 7 a using correction values.
- the print dot 9 a is closer to a print dot 9 on the edge of the previously printed printing path B, thereby permitting streak-free printing.
- the correction required for this purpose may, for instance, rely on detection by a camera 13 (as shown in FIG. 7 ).
- the edge of the printing path B that is detected by the camera is used by a non-illustrated computer to correct the association of nozzles and print dots.
- the print dots of the printing path A are moved closer to the print dots of the printing path B. This may be done, for example, by having respective adjacent nozzles print the print dots as shown by the offset 11 for the print dot 9 a and the two nozzles 7 a and 7 b in FIG. 8 as described above. However, if it is found that there would be too much overlap between the print dots of the respective printing paths A and B, the print dots are moved in the opposite direction by the correction, i.e. the print dots of the printing path A are printed by adjacent nozzles in such a way that their distance from the printing path B is increased.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ink Jet (AREA)
- Manipulator (AREA)
- Spray Control Apparatus (AREA)
- Coating Apparatus (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE102012006370.9 | 2012-03-29 | ||
DE102012006370A DE102012006370A1 (de) | 2012-03-29 | 2012-03-29 | System zum Bedrucken eines Objekts |
DE102012006370 | 2012-03-29 |
Publications (2)
Publication Number | Publication Date |
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US20130257984A1 US20130257984A1 (en) | 2013-10-03 |
US8882242B2 true US8882242B2 (en) | 2014-11-11 |
Family
ID=47900578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/853,212 Expired - Fee Related US8882242B2 (en) | 2012-03-29 | 2013-03-29 | System for printing on an object |
Country Status (5)
Country | Link |
---|---|
US (1) | US8882242B2 (de) |
EP (1) | EP2644392B1 (de) |
JP (1) | JP6157174B2 (de) |
CN (1) | CN103358710B (de) |
DE (1) | DE102012006370A1 (de) |
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US9636936B2 (en) | 2015-02-11 | 2017-05-02 | Heidelberger Druckmaschinen Ag | Device for printing on at least one region of the surface of an object |
US10611175B2 (en) | 2018-06-21 | 2020-04-07 | Heidelberger Druckmaschinen Ag | Method for printing on a body by using inkjet printing |
US11084301B2 (en) | 2016-02-05 | 2021-08-10 | A. Schmidt e.K. | Printing method and printing device |
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US11154892B2 (en) | 2016-12-14 | 2021-10-26 | Dürr Systems Ag | Coating device for applying coating agent in a controlled manner |
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US11440035B2 (en) | 2016-12-14 | 2022-09-13 | Dürr Systems Ag | Application device and method for applying a multicomponent coating medium |
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US11203030B2 (en) | 2016-12-14 | 2021-12-21 | Dürr Systems Ag | Coating method and corresponding coating device |
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US11944990B2 (en) | 2016-12-14 | 2024-04-02 | Dürr Systems Ag | Coating device for coating components |
US11298717B2 (en) | 2016-12-14 | 2022-04-12 | Dürr Systems Ag | Print head having a temperature-control device |
US11338312B2 (en) | 2016-12-14 | 2022-05-24 | Dürr Systems Ag | Print head and associated operating method |
US11878317B2 (en) | 2016-12-14 | 2024-01-23 | Dürr Systems Ag | Coating device with printhead storage |
US11504735B2 (en) | 2016-12-14 | 2022-11-22 | Dürr Systems Ag | Coating device having first and second printheads and corresponding coating process |
US11813630B2 (en) | 2016-12-14 | 2023-11-14 | Dürr Systems Ag | Coating method and corresponding coating device |
US10611175B2 (en) | 2018-06-21 | 2020-04-07 | Heidelberger Druckmaschinen Ag | Method for printing on a body by using inkjet printing |
CN113382830A (zh) * | 2019-02-12 | 2021-09-10 | 惠普发展公司,有限责任合伙企业 | 表面标记机器人 |
US20210363708A1 (en) * | 2019-02-12 | 2021-11-25 | Hewlett-Packard Development Company, L.P. | Surface marking robot |
Also Published As
Publication number | Publication date |
---|---|
JP6157174B2 (ja) | 2017-07-05 |
CN103358710A (zh) | 2013-10-23 |
JP2013202781A (ja) | 2013-10-07 |
EP2644392A3 (de) | 2013-11-13 |
DE102012006370A1 (de) | 2013-10-02 |
EP2644392A2 (de) | 2013-10-02 |
CN103358710B (zh) | 2016-12-28 |
US20130257984A1 (en) | 2013-10-03 |
EP2644392B1 (de) | 2018-04-11 |
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